TASK: Provide basic README

Resolves #1

README.md

-# composer-phpcodesniffer-standards-plugin
\ No newline at end of file
+About
+-----
+
+Composer plugin installs [PHP_CodeSniffer](https://github.com/squizlabs/PHP_CodeSniffer) Standards.
+
+Requirements
+------------
+
+_TODO_
+
+Installation
+------------
+
+_TODO_
+
+Documentation
+-------------
+
+_TODO_
+
+Issues
+------
+
+Bug reports and feature requests can be submitted on the [Github Issue Tracker](https://github.com/higidi/composer-phpcodesniffer-standards-plugin/issues)